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CO 2 and TemperatureWhat is Normal? Concepts to Address before you begin –Climate vs. Weather –Greenhouse Gasses –The Carbon Cycle Play the game? Photosynthesis and Decomposition Concepts to Get at During the Activity –How much of a change in CO 2 concentration and other GHGs is natural? –What is the normal range of CO 2 and temperature variability? –What is the relationship between CO 2 and global temperatures?